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Blow flies are also known as Bottle flies are easily identified by their metallic blue, green, bronze or black colored bodies and are about twice the size of the House fly. Blow flies and other insects activity is used to estimate minimum time since death in possible crime victims.
- Color: Metallic, blue, green, bronze or black
- Legs: 6
- Shape: Stout
- Size: 1/4" - 1/2"
- Antennae: Yes
- Region: All
- Habits: Blow flies usually arrive quickly after an animal dies, especially if bleeding occurred. The presence of large numbers of blow flies in structures usually indicates an animal has died in or under the structure.
- Habitat: In the fall, adult Blow flies congregate in the voids of houses, particularly in wall and can enter through any small opening. On warm days during the winter or the beginning of spring, they leave these voids in large numbers and are frequently trapped inside the building.
- Threats: Blow flies are mechanical carriers of disease organisms.